The paper deals with susceptibility of nodular cast iron with ferritic
-pearlitic matrix on cavitation erosion . Cavitation tests were carried
out with the use of a cavitation erosion vibratory apparatus employing a
vibration exciter operated at frequency of 20 kHz. The study allowed to
determine the sequence of subsequent stages in which microstr ucture of
cast iron in superficial regions is subject to degradation. The first
features to be damaged are graphite precipitates. The ferritic matrix of
the alloy turned out to be definitely less resistant to cavitation
erosion compared to the pearlitic matrix component.